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Highest advisory severityMedium 1 vendor · 1 advisory

CVE-2026-74465

CVE-2026-74465: 1 tracked advisory record across Red Hat. Compare vendor sources.

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Red Hat

1 advisory
  • Advisory severityMedium5.5

    Medium [CVE-2026-74465] fix potential UAF on meter attach failure

    CVE-2026-74465Source published Source updated

    In the Linux kernel, the following vulnerability has been resolved: net: openvswitch: fix potential UAF on meter attach failure While attaching a newly created meter attach_meter() function makes the new meter visible to other CPUs but can still fail afterwards. On failure, it detaches the meter back and returns an error. However, this is an unexpected behavior for the ovs_meter_cmd_set() that uses a plain kfree(meter) on attach failure without waiting for RCU readers to stop using it, assuming it was never visible. This is never a problem for ovs-vswitchd as it always creates meters before creating any flows that use them.

    Affected products in this advisory
    • Red Hat Enterprise Linux 10
    • Red Hat Enterprise Linux 8
    • Red Hat Enterprise Linux 9
    • Red Hat package: kernel-rt
    Source-reported affected versions
    Affected-version details not available in this record.
    Source-reported fixed versions
    No fixed-version detail extracted. This does not mean no fix exists.
    Mitigation guidance
    No mitigation guidance extracted; consult the source.

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